GamersGate are offering a neat way of getting your hands on the entire S.T.A.L.K.E.R. series (or more accurately, the original game and its two expansions). Each game as been individually reduced to between £2-3, but buying them all together will save you an extra few pence.

In case you don't already know, S.T.A.L.K.E.R. Shadow Of Chernobyl is a freeform, miserable, brilliant, tense and utterly rewarding gem of a game, and the expansions are rather good too.